I suppose it depends on where you camp. I have had one of the simple cheap ones for 5 years. It did kick out on me once, I don't know why. I'm happy enough with it.
How dirty of electricity do some of you have ? I have a simple surge protector on my computer too. Most people I know around here don't even use one for that. The electric company has countless protections on their lines. And, here in MN all electrical wiring has countless numbers of regulations and inspectors to make sure everything works OK. I've never heard of anyone having a problem because of bad power,,, in my area.
I guess it all depends on how much risk you personally want to take.